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linux/drivers/dma-buf
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Tetsuo Handa 165b25e3ee dma-buf/sw-sync: don't enable IRQ from sync_print_obj() 
[ Upstream commit b794918961 ]

Since commit a6aa8fca4d ("dma-buf/sw-sync: Reduce irqsave/irqrestore from
known context") by error replaced spin_unlock_irqrestore() with
spin_unlock_irq() for both sync_debugfs_show() and sync_print_obj() despite
sync_print_obj() is called from sync_debugfs_show(), lockdep complains
inconsistent lock state warning.

Use plain spin_{lock,unlock}() for sync_print_obj(), for
sync_debugfs_show() is already using spin_{lock,unlock}_irq().

Reported-by: syzbot <syzbot+a225ee3df7e7f9372dbe@syzkaller.appspotmail.com>
Closes: https://syzkaller.appspot.com/bug?extid=a225ee3df7e7f9372dbe
Fixes: a6aa8fca4d ("dma-buf/sw-sync: Reduce irqsave/irqrestore from known context")
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/c2e46020-aaa6-4e06-bf73-f05823f913f0@I-love.SAKURA.ne.jp
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-06-16 13:28:47 +02:00
..
dma-buf.c dma-buf: WARN on dmabuf release with pending attachments 2021-11-17 09:48:27 +01:00
dma-fence-array.c dma_fence_array: Fix PENDING_ERROR leak in dma_fence_array_signaled() 2022-01-27 09:19:28 +01:00
dma-fence-chain.c dma-buf: fix stack corruption in dma_fence_chain_release 2019-08-05 17:32:33 +02:00
dma-fence.c dma-fence: Serialise signal enabling (dma_fence_enable_sw_signaling) 2020-10-01 13:17:11 +02:00
dma-resv.c dma-buf/dma-resv: Respect num_fences when initializing the shared fence list. 2020-12-30 11:51:46 +01:00
Kconfig dma-buf: Introduce selftesting framework 2019-08-19 18:01:34 +01:00
Makefile dma-buf: Add selftests for dma-fence 2019-08-19 18:09:46 +01:00
selftest.c dma-buf: Introduce selftesting framework 2019-08-19 18:01:34 +01:00
selftest.h dma-buf: Introduce selftesting framework 2019-08-19 18:01:34 +01:00
selftests.h dma-buf: Add selftests for dma-fence 2019-08-19 18:09:46 +01:00
seqno-fence.c
st-dma-fence.c dmabuf: Mark up onstack timer for selftests 2019-08-20 13:49:15 +01:00
sw_sync.c dma-buf/sw_sync: Avoid recursive lock during fence signal 2023-08-30 16:27:28 +02:00
sync_debug.c dma-buf/sw-sync: don't enable IRQ from sync_print_obj() 2024-06-16 13:28:47 +02:00
sync_debug.h
sync_file.c dma-buf/sync_file: Don't leak fences on merge failure 2021-07-25 14:35:15 +02:00
sync_trace.h
udmabuf.c udmabuf: Set the DMA mask for the udmabuf device (v2) 2022-09-05 10:27:45 +02:00